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What is “above-the-fold content” in Google Pagespeed?

Until recently, my site (www.heatexchangers.ca) scored 98% on Google Page Speed. There were a couple of things I could do nothing about such as the query string from web fonts. I was very happy with this as this represented all that I could do. ...
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How can I get the last 7 characters of a PHP string?

... Use substr() with a negative number for the 2nd argument. $newstring = substr($dynamicstring, -7); From the php docs: string substr ( string $string , int $start [, int $length ] ) If start is negative, the returned string will start at the start'th char...
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How to add a new row to an empty numpy array

... The way to "start" the array that you want is: arr = np.empty((0,3), int) Which is an empty array but it has the proper dimensionality. >>> arr array([], shape=(0, 3), dtype=int64) Then be sure to append along axis 0: arr = np.append(arr, np.array([[1,2,3]]), axis=0)...
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How do you push just a single Git branch (and no other branches)?

I am working on a local git repository. There are two branches, master and feature_x . 4 Answers ...
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Java packages com and org

What are the meaning of the packages org and com in Java? 4 Answers 4 ...
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Express-js wildcard routing to cover everything under and including a path

I'm trying to have one route cover everything under /foo including /foo itself. I've tried using /foo* which work for everything except it doesn't match /foo . Observe: ...
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Json.net serialize/deserialize derived types?

json.net (newtonsoft) I am looking through the documentation but I can't find anything on this or the best way to do it. ...
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In javascript, is an empty string always false as a boolean?

... Yes. Javascript is a dialect of ECMAScript, and ECMAScript language specification clearly defines this behavior: ToBoolean The result is false if the argument is the empty String (its length is zero); otherwise the result is true Quote taken from http://www...
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Signal handling with multiple threads in Linux

In Linux, what happens when a program (that possibly has multiple threads) receives a signal, like SIGTERM or SIGHUP? 2 Ans...
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How can I install from a git subdirectory with pip?

I have a git repository with many folders, one of them being a python module installable with pip, like this: 2 Answers ...